/Engine/Source/Runtime/Engine/Public/Animation/AnimCurveTypes.h
Initialize from another curve. Just copies the filter and empties 'this'.
template<typename OtherAllocator, typename OtherElementType> void InitFrom ( const [TBaseBlendedCurve](API\Runtime\Engine\Animation\TBaseBlendedCurve)< OtherAllocator, OtherElementType > & InCurveToInitFrom )